Hello,
I agree with Steve, however i would also look at the Shure sm57. Both mics are strong as steel but i do like the sound you get out of the SM57. You can position it right up to a speaker just like the 58 but i think the 57 develops a better sound and with its pick up pattern you will be better off. The pick up pattern can changed by unscrewing the top.
Look at this link for the sm57 mate
Shure SM57 Vocal / Instrument Microphone at DV247.COM
DjRo